Nedul.
A payrise of 20% on the prop fleet will never keep a Pilot flying a turbo prop. That wage increase did nothing to retain the pilots. It's all about Boys and there toys. If there is something dangling between their legs the boys will want to fly something that goes faster than the competition and flys at flight level nose bleed.
I will return to a turbo prop when the company pays me more than the easyjet driver sitting next to me on the ramp. That is the way it is and nothing is going to change.